Devices for maintaining surgically created openings

• US 20050192526A1
• Filed: 12/07/2004
• Published: 09/01/2005
• Est. Priority Date: 04/19/2002
• Status: Abandoned Application

• Current Assignee: Bryan Loomas, Cary Cole, Claude Vida, David Thompson, Don Tanaka, Gary Kaplan, Halil Karabey, Kelly Shriner, Michael Biggs, Michael Willink, Mike Collinson, Russ Redmond, Thomas Keast
• Original Assignee: Bryan Loomas, Cary Cole, Claude Vida, David Thompson, Don Tanaka, Gary Kaplan, Halil Karabey, Kelly Shriner, Michael Biggs, Michael Willink, Mike Collinson, Russ Redmond, Thomas Keast
• Inventors: Vida, Claude, Tanaka, Don, Loomas, Bryan, Thompson, David, Keast, Thomas, Kaplan, Gary, Cole, Cary, Biggs, Michael, Collinson, Mike, Redmond, Russ, Karabey, Halil, Willink, Michael, Shriner, Kelly
• Application Number:
  US11/006,362
• Publication Number:
  US 20050192526A1
• Time in Patent Office: Days
• US Class Current: 604/8
• CPC Class Codes: A61B 17/0218 for minimally invasive surgery A61B17/0281, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 17/064 Surgical staples, i.e. penetrating the tissue
• CPC Class Codes: A61B 17/068 Surgical staplers , e.g. containing multiple staples or clampsstaplers containing only one staple A61B17/10; magazines or containers for staples A61B17/105; for performing anastomosis A61B17/115; staplers in general B25C5/00
• CPC Class Codes: A61B 17/12022 Occluding by internal devices, e.g. balloons or releasable wires plugging an opening in the wall of an organ A61B17/0057; occluders for the cervical canal A61F6/146; vas deferens occluders A61F6/20
• CPC Class Codes: A61B 17/12104 in an air passage
• CPC Class Codes: A61B 17/12172 having a pre-set deployed three-dimensional shape methods of manufacturing A61B2017/00526
• CPC Class Codes: A61B 2017/00252 for by-pass connections, i.e. connections from heart chamber to blood vessel or from blood vessel to blood vessel
• CPC Class Codes: A61B 2017/0046 with a releasable handle; with handle and operating part separable
• CPC Class Codes: A61B 2017/00477 Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/2412 with soft flexible valve members, e.g. tissue valves shaped like natural valves check valves with flexible valve members in general F16K15/14
• CPC Class Codes: A61F 2/86 Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/91 made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
• CPC Class Codes: A61F 2002/043 Bronchi
• CPC Class Codes: A61F 2220/0008 Fixation appliances for connecting prostheses to the body
• CPC Class Codes: A61F 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61F 2230/005 Rosette-shaped, e.g. star-shaped
• CPC Class Codes: A61F 2230/0054 V-shaped
• CPC Class Codes: A61F 2230/0078 hyperboloidal

Abstract

Devices and methods are directed to improving the gaseous exchange in a lung of an individual having, for instance, chronic obstructive pulmonary disease. More particularly, conduits may be deployed in the lung to maintain collateral openings (or channels) surgically created through airway walls. This tends to facilitate both the exchange of oxygen ultimately into the blood and decompress hyper-inflated lungs.

Claims

1. A conduit for bronchoscopic placement within a channel created in lung tissue comprising:

a frame structure having a radially expandable center section, a proximal and distal sections located at a first and second ends of the center section;

a tissue barrier located about the frame structure, where the tissue barrier prevents tissue from growing into the frame structure; and

a visualization mark being visually identifiable from the remainder of the tissue barrier or frame structure, the visualization mark assisting in placement of the conduit relative to the channel.

2. The conduit of claim 1, further comprising at least one center control-segment attached to a portion of the center section, the center control member having a folded shape that unfolds upon radial expansion of the center section and restricts further expansion of the center section beyond a maximum profile, where the proximal and distal may expand beyond the maximum profile such that when expanded the frame structure is non-cylindrical

3. The implant of claim 1, where the tissue barrier comprises a polymeric material.

4. The implant of claim 3, where the frame structure comprises a plurality of members forming a mesh having a plurality of interstices

5. The implant of claim 3, where the polymeric material comprises a material selected from the group consisting of silicone, polyurethane, PET, PTFE, and expanded PTFE.

6. The implant of claim 3, wherein said tissue barrier is located about an interior of said center section.

7. The implant of claim 3, wherein the tissue barrier covers the mid portion, the tissue barrier further covers a proximal portion of the frame structure such that the distal portion of the frame structure remains uncovered.

8. The implant of claim 3, where the tissue barrier forms a first layer on the frame structure, the implant further comprising a second visible layer at least partially covering said first layer.

9. The implant of claim 1, where the visualization mark covers only a portion of the tissue barrier.

10. The implant of claim 1, where the visualization mark is disposed about the tissue barrier corresponding to the mid portion.

11. The implant of claim 1, where the visualization mark is disposed about the tissue barrier corresponding to only one of the proximal portion or the distal portion of the implant.

12. The implant of claim 1, where the visualization mark comprises a visible coating on the implant.

13. The implant of claim 1, where the visualization mark comprises a biocompatible polymer.

14. The implant of claim 1, where the visualization mark comprises a stripe circumferentially disposed about at least a portion the frame structure.

15. The implant of claim 1, further comprising a bioactive substance disposed on at least a portion of the tissue barrier.

16. The implant of claim 15, wherein said bioactive substance is selected from the group consisting of pyrolitic carbon, titanium-nitride-oxide, paclitaxel, fibrinogen, collagen, thrombin, phosphorylcholine, heparin, rapamycin, radioactive 188Re and 32P, silver nitrate, dactinomycin, sirolimus, cell adhesion peptide.

17. The implant of claim 2, where the folded shape of the center-control segment is selected from an arcuate shape, a semi-circular shape, an arcuate, an annular and a v-shape.

18. The implant of claim 17, wherein said at least one center-control segment is reinforced with at least one ancillary center-control segment.

19. The implant of claim 17, wherein said center-control segment is made of an elastic material.

20. The implant of claim 19, wherein said biocompatible polymer has a white color.

21. The implant of claim 1, where the mid portion comprises an inelastic material such that the mid portion does not automatically radially expand when unconstrained.

22. The implant of claim 1, where the mid portion comprises an elastic material and the mid portion automatically radially expands when unconstrained.

23. The implant of claim 1, where the frame structure comprises a material selected from the group of implantable materials consisting of polypropylene, PTFE, nylon, stainless steel, titanium, titanium alloy, MP35N, and nitinol.